/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/Drawing/PreviewGeometryActor.h
the LineSetComponent with the given LineSetIdentifier, or nullptr if not found
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)() [ULineSetComponent](API\Plugins\ModelingComponents\Drawing\ULineSetComponent) * FindLineSet ( const [FString](API\Runtime\Core\Containers\FString) & LineSetIdentifier )